1 et 1 font 3

They are called viewport units, and there are a number of them that do slightly different (all useful) things. One unit is 1% of ... One unit on any of the three values is 1% of the viewport axis. ... h1 { font-size: 5.9vw; } h2 { font-size: 3.0vh; } p { font-size: 2vmin; } ... This seems to work on Safari 5.2 (Beta 3) [Version 5.2 ( 7536.6.1)].